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Voltage measurement transformer based on active ceramic materials

Objective



To improve the stability and efficiency of complex
electrical transmission networks requires an everincreasing number of instrument transformers under higher
system voltages. As the size, weight and cost of
classical instrument voltage transformers increase
dramatically with the voltage, there is a growing need
for new kinds of measurement devices. The present project
develops a new measurement alternative based on
mechanical waves rather than magnetic fields. The
transformer consists of a voltage sensor and associated
electronic circuits. The sensor is based on active
ceramic (piezoelectric) material that generate mechanical
waves (emitter). These waves propagate through dielectric
material and are converted to electrical signals in a
receiver. The main areas covered by the project are:

Computer simulations of mechanical wave propagation and
electrical field distribution in several voltage sensor
structures.
Development of active ceramic materials adapted to the
sensor requirements of the emitter and receiver.
Design and simulation of electronic circuits that
process the electrical signals form the receiver.
Development of high voltage electrical components
required for the whole measurement instrument.
Laboratory and field prototype tests. These tests will
be carried out in existing facilities for testing
previous generation of instrument transformers.

The new kind of transformer is expected to reduce the
volume (23%), weight (38%), isolating oil (100%) and
manufacturing cost (31%) of the most advanced capacitor
voltage transformer available in the market. In addition,
it does not require maintenance and has lower
environmental impact (no isolating oil and low
electromagnetic emission).

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Red Eléctrica de Espaça S.A.
Address
177,Paseo Del Conde De Los Gaitanes 177
28109 Madrid
Spain

Participants (7)

ANSALDO RICERCHE SRL - SOCIETA PER LO SVILUPPO DI NUOVE TECNOLOGIE
Italy
Address
Corso Perrone 25
16161 Cornigliano
Ansaldo Industria SpA
Italy
Address
Via Pieragostini 50
16151 Genova
Enterprise Ireland - Trading as Bioresearch Ireland
Ireland
Address
Glasnevin
9 Dublin
Morgan Matroc Ltd
United Kingdom
Address
Vauxhall Industrial Estate
LL14 6HY Wrexham
SIEGERT ELECTRONIC GMBH
Germany
Address
Pfannenstielstrasse 10
Cadolzburg
TECHSONIC SARL
France
Address
Route Des Alisiers Bat. B
06600 Antibes
UNIVERSIDAD PONTIFICIA COMILLAS
Spain
Address
26,C/ Santa Cruz De Marcenado 26
28015 Madrid